Help Other How do I make an injectable client for Fabric 1.20+?

[wariaciktotalny]

In 2026, pretty much every client is injectable, and I'm curious what method they use. Most YouTube tutorials use JNI with C++. Can you do it in pure Java and turn it into a DLL? And what about Mixins?. I'd appreciate any info on this.

 

[calloc0x75]

Hi not a professional on this at all but, i think you will need some sort of C/C++ just to get the .dll into the JVM, think of your c++ part just as your way into the JVM and from there on you can write everything in Java. So all you do is basically CreateRemoteThread + LoadLibrary (or whatever fits your use case) and then use JNI Invocation API to attach to the JVM and get a JNIEnv* pointer and you should have access to the java runtime which from there on your payload can be fully Java

 

[swd]

In 2026, pretty much every client is injectable, and I'm curious what method they use. Most YouTube tutorials use JNI with C++. Can you do it in pure Java and turn it into a DLL? And what about Mixins?. I'd appreciate any info on this.

im pretty sure you can do it in java but thats a diff approach am not a coder in java but it should work same with cpp but its harder in cpp to do

 

[calloc0x75]

im pretty sure you can do it in java but thats a diff approach am not a coder in java but it should work same with cpp but its harder in cpp to do

youre actually wrong btw!

 

[swd]

youre actually wrong btw!

i said i dont code in java bro

 

[calloc0x75]

i said i dont code in java bro

noob

 

[jkfskflasfsdas]

im pretty sure you can do it in java but thats a diff approach am not a coder in java but it should work same with cpp but its harder in cpp to do

wrong